1756 Letter from London to Philadelphia, carried by the British packet service from Falmouth to New York.
When the French and Indian War began in 1754, the British realized they need faster communication with their North American colonies, so established a monthly packet service between Falmouth and New York. The rate was one shilling plus inland postage. The sender of this letter prepaid the one shilling packet rate (“P1N“). Packet General Wall departed Falmouth on 11 September1755, and arrived at New York on 8 November. The New York post office marked postage due of three pennyweights of silver in Philadelphia (“dwt/3“).